Lithic technologies have been an important part of Native American lifeways on California’s Channel Islands for more than 12,000 years. However, little is known about stone tool technologies on Anacapa, the second smallest and closest island to California’s mainland. To broaden our understanding of stone tool technologies on the Channel Islands and assess the availability of toolstone on Anacapa, we classified 859 lithic artifacts recovered from three ~3,000-year-old shell middens. Each artifact was classified by material, artifact type, and visually inspected for thermal damage. One hundred and forty three of the larger artifacts were examined using a glossmeter. Our results suggest that prehistoric Anacapa Islanders were heat-treating and using local Anayapax polychromatic green cherts and chalcedony to manufacture a variety of core and flake tools. Some of these cherts may overlap in color and quality with polychromatic cherts documented on eastern Santa Cruz Island, but the polychromatic green cherts appear to have been of local Anacapa origin. Our study sheds light on lithic resource use on Anacapa Island, demonstrates that cherts were available and procured on all the Northern Channel Islands, and adds to the growing challenges of identifying specific sources of chipped stone artifacts.

Despite dramatic growth in the number of Terminal Pleistocene and Early Holocene sites known from California’s Northern Channel Islands, two substantial chronological gaps have remained for which no early sites had been found—one between ~10,000 and 11,400 cal B.P. and another between ~12,200 and 12,900 cal B.P. These gaps have led some scholars to propose that the Northern Channel Islands may have been abandoned by Paleocoastal peoples for substantial periods, while others have suggested that the number of early sites is too limited San Miguel Island Santa Rosa Island to be con dent that the gaps are not due to sampling or preservation issues. Here we summarize what is known about CA-SMI-274, a San Miguel Island shell midden recently dated to ~10,500 cal B.P. The site lls a portion of the later gap and sheds some light on a previously unknown period in the deep archaeological history of the islands.

Rattlesnake Cave is located on the western shore of Lake Abert in the northern Great Basin of southeast Oregon, one of hundreds of archaeological sites in the Lake Abert/Chewaucan Basin. The site was dug by collectors in the 1950s, and recovered materials were donated to the Fort Rock Valley Historical Society and Homestead Museum in the early 1990s. We analyze 77 artifacts in the assemblage, which includes cordage, basketry, moccasins, as well as wood, bone, and stone tools. We report new radiocarbon (14C) dates for the site, and the results of energy dispersive x-ray fluorescence (EDXRF) on one basalt and nine obsidian bifaces, matching their chemical signatures to regional geologic sources. We discuss the place of Rattlesnake Cave in the broader context of the northern Great Basin while demonstrating how museum collections may contribute to addressing anthropological research questions.